Читать книгу Inverse Synthetic Aperture Radar Imaging With MATLAB Algorithms - Caner Ozdemir - Страница 58

RCS calculation of simply shaped objects can be approximated with simple analytical expressions. There has been a lot of interest in formulating the scattered field and the RCS from simple objects such as a sphere, cylinder, ellipsoid, or plate. Since the RCS analyses of such objects are very well documented (Crispin and Siegel 1970; Ruck et al. 1970; Skolnik 1990, Warnick and Chew 1999; Sullivan 2000), only some of them (those that are important in radar imaging) are listed in Figure 2.4. When usual targets such as airplanes, ships, and tanks are considered, their physical shapes include canonical structures such as corner reflectors, cylinder‐like formations, and flat and curved surfaces. Therefore, the knowledge of RCS from basic canonical shapes is important to comprehend the RCS contribution of these substructures on the target to the total RCS.

Figure 2.4 RCS values for perfectly conducting simple objects (all objects are taken as perfect electrical conductors).